Evaporative air cooler



FIG. 1 is a side elevational view of the cooler of the left side as viewed from the front;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top view thereof; and,

FIG. 5 is a perspective view thereof. 

The ornamental design for an evaporative air cooler, as shown and described. 